How old is Jessie J?

Jessie J wearing Argonaut Shell Earrings by Floa Design

Wondering how old is Jessie J? Jessie J is 37 years old. She was born on March 27, 1988. Jessie J now focuses on her new album, motherhood, and recently shared her diagnosis of early-stage cancer. Instead of hiding, she opened up with honesty and strength. That openness has made her more than just a woman with a powerful voice or bold style — Queen Jessie J stands for courage, vulnerability, and the strength it takes to show up as you are.